McMan.com President McMan Offers His Personal Microsoft Stock Certificate Specimen in Mint Condition Signed By William H. Gates aka Bill Gates The Founder and CEO of Microsoft. Rare Blue Design. Microsoft Issued Multiple Physical Versions Green, Blue, Signed By, Bill Gates, Steve Ballmer. Security Columbian and Microsoft Made An Estimated 50 Total Stock Certificates in The 1980's-1990's in Multiple Issuances and Variations. 30 Years Later, Many Stock Certificates Were Lost or Accidentally Destroyed. Approximately 12 Physical Microsoft Stock Certificates Exist World-Wide in 2026.